Plate-carrying frame for photographic apparatus



April 6 1926.

J. I... BAILLE RRYNG FRAME FOR .PHOTOGRAPHIIC APPARATUS PLATE GA Filed Feb. 6, 1923 I I I I I I I I I I I I I I I l I I I I l -Lb Patented Apr. 6, 1926.

UNITED STATES Parent ori-fics.

JEAN LOUIS BAILLE, OF PARIS, FRANCE, ASSIGNOR TO SOGLT: BAILLE-LEMAIRE- ET-FILS, OF PARIS, FRANCE, A. CORPORATION' GF FRANCE PLATE-CARRYING- FRAME FOR PHOTOGRAPHIC APPARATUS.

Application led February 6, 1923,` Serial No. 617,370.

To @ZZ whom t may concern:

Be it known that I, JEAN LOUIS BAiLLn, a citizen of the French Republic, residing at 26 Rue Oberkampf, Paris, France, have invented certain new and useful Improvements in a Plate-Carrying F rame for Photographic Apparatus, of which the following is a specification.

rEhe present invention relates to a plate holder of the type in which the sensitive .plate is carried by a plate carrier which is introduced and spring held in an outer case which is mounted on the photographic apparatus.

According to this invention, the plate carrier receives the sensitive plate between lateral slides with sufficient clearance to allow ot the easy introduction ot thc plate, the sensitive face ot the latter being then maintained always in the same plane, when it is introduced with its carrier into the outer case, by lsprings secured to the outer case and resting on the back of the plate through the pertorations in the carrier. A construction of the invention is illustrated in the annexed drawings, in which:

Fig. l is a trent elevational view ot the invention,

2 is a vertical transverse section taken on line A-A. of Fig. l,

Fig. 3 is a top plan view of the arrangement ot the invention.

Fig. l is a horizontal sectional view taken on the line B-B ot Fig. 2.

The holder comprises three distinct parts, namely the slide l, the case 2 and the plate carrier 3.

The plate carrier v3 is in the form of a rectangular plate the longitudinal edges ot which are bent at right angles to form opposed grooves ll between which is inserted a sensitive plate ll.

The case consists ot a plate-like body 2 which constitutes one wall while continuing therefrom are side walls 12 having inturned portions l2 which are opposed to each other in spaced parallel relation from the wall or body 2 while the terminals of the side walls are .shaped to form opposed slides or grooves 18 which extend longitudinally of the case. In this connection it is to be noted thatl the portions l2 and side walls l2 provide grooves to accommodate the plate carrier which in turn houses the plate e.

To load the holder, the sensitive plate is introduced through'the end 8 in the platecarrier -which latter, in its turn, is slid in the grooves l2 into the case.

To prevent access of light to the case, the plate carrier has on both sides at its upper part 10 a velvet strip 5 one surface of which tits on the inner surface ot the case when the plate-carrier is slid therein.

Besides, the upper edge 7 of the platecarrier covers the ease as indicated in Fig. Q for 'forming a battle.

Finally, the slide l is placed in position in the grooves lf3 for closing the traine. `At the end 8 of the plate-carrier 3 an incline has been provided; on the other hand, at the upper part of the case 2 the grooves l2 have been enlarged at 6. This inc-line and this enlargement are adapted to facilitate the insertion of the plate-carrier into the case.

Finally, the springs l secured to the case, Fig. l, are so placed that they pass through the grooves 9 in the plate-carrier 3 when the latter is placed in the case so as to always project the sensitive plate loiuvard in order that it may always be maintained `in the same plane.

TWhat I claim as my invention and desire to secure by Letters Pat-ent is l. In a plate-holder ot the character described, a case, a carrier for insertion in the case and provided with opposed longitudinal grooves along' the marginal edges adapted to receive the sensitive plate to allow ot the easy introduction of the plate, springs secured to the back of the case passing through the carrier in order to maintain the sensitive face of the plate in a predetermined plane in the case, and means provided on the carrier and on the case to facilitate the easy introduction of the carrier into the case.

2. In a plate-holder of the character described, a case, a carrier removably engaged within the case provided with opposed longitudinal grooves along the marginal edges adapted to receive the sensitive plate with sufticient ease to allow introduction ot the plate, springs secured withinthe case extending through and pressing against the back of the plate to maintain the sensitive face of the plate in a predetermined plane in the case, a slide removably engaged in the case between the carrier and the back of the' Case, and the lever ,portion 0f the Plate ioo carrier and the ends of the plate-holder being reduced to facilitate the easy insertion of the plate carrier into the ease.

3. A device of the character described comprising a oase, including a body pro vided at the eide edges and adjacent the open front, inner and outer longitudinal grooves7 a plate carrier in back of which is provided longitudinal slots While the side edges in turn are formed ot opposed longitudinal grooves adapted to receive a sensitive plate With sufficient clearance to allow of the introduction of the plate, the carrier being insertable Within the inner grooves of the holder, a slide engageable with the opposed outer grooves for enclosing the holder, springs secured to the back of the case and passing through the slots in the plate carrier and adapted to maintain the sensitive plate of the 'face in a predetermined plane in the holder7 and a flexible strip secured transverselhx7 about the outer portion of the carrier and contacting` with the case and the slide for preventing the entrance ot light Within the holder.

In testimony whereof l have signed in v name to this specification.

JEAN LQUIS BAILLF. 

